Sodium pentothal, the trade name for thiopental, is the best-known of a class of barbiturates popularly supposed to act as truth serums.

ECONOMIST: Drugs cannot make you tell the truth

Scientists found however, that feeder cells and serums derived from other animal cells introduced disease-causing agents that compromised the quality of the cell lines.

FORBES: Aberrations Pose A Challenge for Reprogramming Stem Cells